Die Grinder, Duty Medium Duty, Horsepower 0.6 hp, Collet Size 1/4 in, Grinder Orientation Straight, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Max. Speed 27,000 RPM, Air Inlet Type NPT, Air Inlet 1/4 in NPT Female, Tool Style Straight, Kit Contents (1) Bare Tool, Includes 1/4 in and 6mm Collet Holder, Safety Features Safety Lever, Switch Location Bottom, Power Source Air Powered